Viewing profile — mdaverde

The answer to miserable health isn't exercise. It's high quality sleep.

But others do

Agree with everything has trade offs but do not agree that they are equivalent in impact. Tradeoffs have tradeoffs

So much of HN now is medical & healthcare related

I'm not sure when this trend started but it seems to me that a lot of articles that hit the front page are more medically or health related, especially on the weekends. Just this m…

This was exactly my take. This language just got a whole lot of significant focus behind it

Literally, yes. As example, the north bridge isn't as explicit today as the document makes it seem. A lot of functionality that used to be reserved for the north bridge is now bein…

Just read your article: https://www.marginalia.nu/log/09-system-upgrade/ You got rid of a lot but where did the functionality for those tools go? I understand wanting to get rid of…

Question: how do you reliably deploy? And if it's just scp-ing tarballs, how do you handle dependencies? Do you run & upgrade any third-party processes that rely on having their fi…

This is changing! (or technically, has changed!) eBPF recently added the ability to look through internal data structures through iterators [0] so instead of parsing text we can ru…

Can you explain why you consider it to be worse? eBPF is also working on signed programs [0] [0] https://lwn.net/Articles/853489/

eBPF has changed several of these constraints [0] - Verifier can explore up to 1million insns now instead of 4096 - 512 bytes of stack but with tail chaining you have up to 8k - Bo…

Bonus points because it's C99

In the same way out-of-tree kernel modules are enforced to license themselves as GPL if they intend to use a lot (if not most) of the available functionality, eBPF programs fall un…

Looks like eBPF support for HID devices will be available in the next kernel release (v6.2) Source: https://twitter.com/kernellogger/status/1592786651968839683 Linux Plumbers Conf …

It would be nice to see a comparison of FreeBSD's capsicum vs OpenBSD's pledge vs Linux's landlock features. It seems to me that the general vision of these projects have overlap b…

In the near term with a recent-enough BTF-enabled kernel, bpftool should be enough for an "ambitious" user to understand what objects are being run on a system. Unfortunately, "amb…

You can see the interpreter instructions through bpftool: bpftool prog dump xlated id 173 To see the JITed instructions: bpftool prog dump jited id 173 For the interpreted insns, y…

In 2020, CAP_BPF was added to allow the use of eBPF. For most programs, you'll use a combination of CAP_BPF, CAP_PERFMON and/or CAP_NET_ADMIN. For some edge cases (such as hardware…